I lost one of my truck keys about 2 weeks ago and searched everywhere multiple times. I knew it had to be at the house somewhere because I drove the truck home. I've been using the spare key since. I'm paranoid about only having one key for the truck, so I stopped by Ford yesterday to order a new key and remote. I figured it would be a rip off of around $50. They said it would be $235!! I said "no thanks, I'll just go by the hardware store and have a spare key made from the one I'm using." The guy said "Nope, can't do it. That's why they're so expensive. There's a chip in the plastic part of the key that is needed to activate the ignition." I said "Geez, I knew some keys had that, but I thought it was part of a special package, I didn't realize it was a standard thing." He said "No, its standard now." What a rip off!! I decided to make do with just one key. When I got home, I decided to have one more look around inside the truck and what do you know, I found the missing key right away. After weeks of searching the house and multiple times going through the truck top to bottom, it was right there in the arm rest console with a bunch of junk that's accumulated in there. I guess its time to clean out the console. I guess I'm glad too that the replacement is so expensive, or I'd have bitten the bullet and ordered a new one.